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GB/T 22754-2008 English PDF

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GB/T 22754-2008: Tennis ball
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GB/T 22754-2008English189 Add to Cart 3 days [Need to translate] Tennis ball Valid GB/T 22754-2008

PDF similar to GB/T 22754-2008


Standard similar to GB/T 22754-2008

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Basic data

Standard ID GB/T 22754-2008 (GB/T22754-2008)
Description (Translated English) Tennis ball
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Y55
Classification of International Standard 97.220.01
Word Count Estimation 8,867
Date of Issue 2008-12-30
Date of Implementation 2009-09-01
Quoted Standard GB/T 2828.1-2003
Regulation (derived from) National Standard Approval Announcement 2008 No.24 (Total No.137)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the classification of tennis, requirements, test methods, inspection rules and signs, packaging, transport and storage. This standard applies to race and practice with tennis.

GB/T 22754-2008: Tennis ball

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Tennis ball ICS 97.220.01 Y55 National Standards of People's Republic of China tennis Posted 2008-12-30 2009-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

The standard main technical indicators using the International Tennis Federation (ITF) "Rules of Tennis" (2008 edition) of all technology related to tennis Claim. The standard proposed by China National Light Industry Council. This standard by the National Standardization Center stationery. This standard was drafted. Zhejiang Tianlong Group Co., Ltd., Shanghai Tennis Factory, Shanghai Co., Ltd. Sanding tennis. The main drafters of this standard. aquatic Lu Hung Hui new, Chen Xu, Li Guohua, Zhang Jia Ming. tennis

1 Scope

This standard specifies the tennis classification, requirements, test methods, inspection rules and signs, packaging, transportation and storage. This standard applies to tennis matches and practice with.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 2828.1-2003 Sampling procedures for inspection - Part 1. by acceptance quality limit (AQL) retrieval batch test sample Programme (ISO 2859-1.1999, IDT) Category 3 3.1 divided by the scope of the game balls and practice balls. 3.2 according to performance requirements are divided into fast ball, speed ball, slow ball, highland ball, soft ball # 1, # 2 soft ball, soft ball # 3. 3.3 in relative pressure divided into pressure and non-pressure ball ball. No pressure no greater than the air pressure inside the ball 7kPa.

4 Requirements

4.1 game ball should be consistent with the technical requirements specified in Table 1, practice balls should be consistent with the technical requirements specified in Table 2. Table 1 ball game performance Project fastball a slow speed ball ball ball b Plateau Quality/g 56.0 ~ 59.4 Diameter/mm 65.41 ~ 68.58 69.85 ~ 73.03 65.41 ~ 68.58 Promoting deformation/mm 4.95 ~ 5.97 5.59 ~ 7.37 Recovery deformation/mm 6.73 ~ 9.14 8.00 ~ 10.80 Flexible/mm 1350 ~ 1470 1220 ~ 1350 Spherical flannel plump, smooth, close does not show the bottom of a clean, consistent color, no parting line; strip uniformity, no cracks; clear trademark Item 1 soft ball # 2 # 3 # soft ball soft ball c Quality/g 47.0 ~ 51.5 36.0 ~ 46.9 32.0 ~ 42.0 Diameter/mm 63.00 ~ 68.58 60.00 ~ 68.58 69.00 ~ 80.00 Promoting deformation/mm 8.00 ~ 10.50 14.00 ~ 16.50 - Recovery deformation/mm - - - Flexible/mm 1180 ~ 1320 1000 ~ 1150 950 ~ 1100 Spherical flannel plump, smooth, close does not show the bottom of a clean, consistent color; strip uniformity, no cracks; clear trademark Note. Each ball propulsion deformation, the difference between them three measurement data recovery distortion should be less than 0.76mm. a speed of the ball may be a pressure the ball, the ball may be no pressure. No pressure dome internal pressure should be less than 7kPa. No pressure applied to the ball plateau (altitude 1219m in A) area used to be parked in front and using 60d (including 60d) above. b balls applies plateau at an altitude of 1219m above the plateau region to use and apply any venue highlands. c3 # soft ball can be as the standard structure, cutting foam, molded foam ball three ways of forming different structures. If standard spherical structure, the Shall be required in the table were determined.

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